Be sure you go to the Vintage Sewing Machine Shop thread on here and ask your questions. There are several resident experts on treadle machines....they can tell you everything and anything you want to know, including how to complete restore one yourself, if you are so inclined. Also a wooden cabinet expert, who will tell you how to restore/repair the cabinet if it needs it.
There's so much help on here....you just have to go to the right thread. Don't be shy...ask away!! :-)